Font size not changes according to accessibility mode change

[bawantha]

I'm using .sp for my fonts but I noticed font size won't' change when the user changes the device's font size in the accessibility section in Android

[lizhuoyuan]

MaterialApp(
  debugShowCheckedModeBanner: false,
  title: 'Flutter_ScreenUtil',
  theme: ThemeData(
    primarySwatch: Colors.blue,
  ),
  builder: (context, widget) {
    return MediaQuery(
      ///Setting font does not change with system font size
      data: MediaQuery.of(context).copyWith(textScaleFactor: 1.0),
      child: widget,
    );
  },
  home: HomePage(title: 'FlutterScreenUtil Demo'),
),

did u use that? or textstyle?